<template>
  <div class="add">
    <img
      src="@/assets/css/images/question.svg"
      alt=""
      style="width: 45px; height: 45px; vertical-align: middle"
    />
    <b> 出 题</b>

    <el-tooltip
      class="item"
      effect="dark"
      content="设置视频中弹出的问题"
      placement="right"
    >
      <img
        src="@/assets/css/images/doubt.svg"
        alt=""
        style="width: 15px; height: 15px; margin-left:5px;margin-top:5px"
      />
    </el-tooltip>
    <br /><br />
    <!--    卡片视图-->
    <el-card>
      <!--      提示区-->
      <el-alert
        title="添加题目信息"
        type="info"
        center
        :closable="false"
        show-icon
      >
      </el-alert>
      <!--      步骤条区-->
      <el-steps align-center :active="activeIndex - 2" finish-status="success">
        <el-step title="基本信息"></el-step>
        <el-step title="题目图片"></el-step>
        <el-step title="题目内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!--      table --- > tab栏区域-->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-position="top"
        label-width="100px"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLevae"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="插入视频名称" prop="goods_introduce" required>
              <el-input v-model="addForm.goods_introduce"></el-input>
            </el-form-item>
            <el-form-item label="出题人" prop="goods_price">
              <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <!-- <el-form-item label="题目重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item> -->
            <el-form-item label="题目编号" prop="goods_number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <!-- 级联选择器 -->
            <el-form-item label="题目类型" prop="cat" required>
              <el-cascader
                v-model="addForm.cat"
                :options="cateList"
                :props="{ expandTrigger: 'hover', ...cateProps }"
                @change="handleChange"
              ></el-cascader>
              <!-- <el-cascader :options="options" :show-all-levels="false"></el-cascader> -->
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="题目图片" name="3">
            <!--
             action 表示图片要上传到的后台API地址
             handlePreview 点击预览触发
             handleRemove 删除图片触发
             fileList 指定文件列表
             list-type 指定预览组件的呈现方式
            -->
            <el-upload
              class="upload-demo"
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headersObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="题目内容" name="4">
            <!-- 富文本编辑器组件 Two-way Data-Binding -->
            <quill-editor ref="myQuillEditor" v-model="addForm.goods_name" />
            <!--            添加按钮-->
            <el-button type="primary" class="AddBtn" @click="addShop"
              >添加题目</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!--    图片预览-->
    <el-dialog
      title="图片预览"
      :visible.sync="previewDialogVisible"
      width="40%"
    >
      <img :src="previewPath" alt="" class="perviewImg" />
    </el-dialog>
    <!-- 操作指引 -->
    <el-dialog title="操作指引" :visible.sync="operateGuideDialog" width="60%">
      <img src="@/assets/css/images/question.gif" alt="" class="perviewImg" />
      <br />
      <el-switch v-model="neverShow" active-text="不再显示" @click="neverShow">
      </el-switch>
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";
export default {
  name: "Add",
  data() {
    return {
      activeIndex: "0",
      // 添加题目的表单数据对象
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 题目所属的分类数组
        cat: '',
        // 图片的数组
        pics: [],
        // 题目的详情描述
        goods_introduce: "",
        attrs: [],
      },
      options: [{
          value: 'zhinan',
          label: '选择题',
          children: [{
            value: 'shejiyuanze',
            label: '单选题',
          }, {
            value: 'daohang',
            label: '多选题',
          }]
        }, {
          value: 'zujian',
          label: '非选择题',
          children: [{
            value: 'basic',
            label: '填空题',
          }, {
            value: 'form',
            label: '论述题',
           }]
        }],
      // 存放题目列表数据
      cateList: [],
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      // 动态参数列表数据
      manyTableData: [],
      // 静态参数列表数据
      onlyTableData: [],
      // 上传图片的URL地址
      uploadURL: "https://lianghj.top:8888/api/private/v1/upload",
      // 图片上传组件的headers请求头对象
      headersObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      // 预览图片的路径
      previewPath: "",
      // 图片预览的对话框
      previewDialogVisible: false,
      //操作指引对话框
      operateGuideDialog: false,
      // 不再显示
      neverShow: false,
    };
  },
  mounted() {
    this.show();
  },
  created() {
    this.getCateList();
  },
  methods: {
    //操作指引
    show() {
      this.operateGuideDialog = true;
    },
    //TODO 提示不再显示
    neverShow() {
      if ((this.neverShow = true)) this.operateGuideDialog = false;
    },
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败!')
      }
      this.cateList = res.data
      console.log(this.cateList)
    },
    // 级联选择项变化触发
    handleChange() {
      if (this.addForm.cat.length !== 3) {
        this.addForm.cat = []
      }
      console.log(this.addForm.cat)
    },
    // 离开当前 Tabs 页
    // beforeTabLevae(activeName, oldActiveName) {
    //   // console.log('即将离开标签页的名字: ', oldActiveName)
    //   // console.log('即将进入标签页的名字: ', activeName)
    //   if ((oldActiveName === '0' && this.addForm.cat.length !== 3) || this.addForm.goods_name === '') {
    //     this.$message.error('请先选择商品分类! 或 填写商品名称')
    //     return false
    //   }
    // },
    async tabClicked() {
      // 证明访问的是动态列表
      if (this.activeIndex === '1') {
        console.log('动态参数')
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'many' }
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态列表失败!')
        }
        res.data.forEach(item => (item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')))
        // console.log(res)
        this.manyTableData = res.data
      }
      if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'only' }
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态列表失败!')
        }
        this.onlyTableData = res.data
        console.log(this.onlyTableData)
      }
    },
    // 点击图片预览时触发
    handlePreview(file) {
      this.previewPath = file.response.data.url.replace('http://127.0.0.1', 'https://lianghj.top')
      this.previewDialogVisible = true
      console.log('预览图片', file.response.data.url)
    },
    // 处理移除图片的操作
    handleRemove(file) {
      // 1. 获取将要删除的图片的临时路径
      const filePath = file.response.data.tmp_path
      // 2. 从 pics 数组中找到这个图片的对应的索引值
      const index = this.addForm.pics.findIndex(x => x.pic === filePath)
      // 3. 调用数组的splice方法,把图片信息对象,从pics数组中移除
      this.addForm.pics.splice(index, 1)
      console.log('移除图片', file, this.addForm)
    },
    // 监听图片上传成功的事件
    handleSuccess(resposne) {
      // 1. 拼接得到一个图片信息对象
      const picInfo = { pic: resposne.data.tmp_path }
      // 2. 将图片信息对象,push到pics数组中
      this.addForm.pics.push(picInfo)
      console.log(resposne)
      console.log(this.addForm)
    },
    addShop() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项')
        }
        // 执行添加的业务逻辑
        const form = _.cloneDeep(this.addForm)
        form.cat = form.cat.join(',')
        // 处理动态参数
        this.manyTableData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_vals: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        // 处理静态参数
        this.onlyTableData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_vals: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        // console.log(form)
        // 发起请求添加商品数据
        // 商品的名称必须是唯一的
        const { data: res } = await this.$http.post('goods', form)
        console.log(res)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败!')
        }
        this.$message.success('添加商品成功!')
        this.$router.push('/goods')
        // 不能直接做转换因为在 级联选择器 中双向绑定了 goods_cat 作为key
        // this.addForm.goods_cat = this.addForm.goods_cat.join(',')
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.cat.length === 3) {
        return this.addForm.cat[2]
      }
      return null
    }
  }
};
</script>

<style lang="less" scoped>
.el-steps {
  margin: 15px 0;
}
.el-step__title {
  font-size: 13px;
}
.el-checkbox {
  margin: 0 5px 0 0 !important;
}
.perviewImg {
  width: 100%;
  border-radius: 5px;
}
.AddBtn {
  margin-top: 15px;
}
</style>
